| 1 | CTNX | CCC Transport Co. | added 4/2006 | | NAKINA |
| 2 | CTNX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005; eliminated 4/2006 | | NAKINA |
| 3 | CTNX | General Electric Railcar Services Corp. | added 1/1999; eliminated 1/2000 | | NAKINA |
| 4 | CTNX | Continental Carbon Co. | added 7/1996; eliminated 1/1999 | | NAKINA |
| 5 | CTNX | Continental Carbon Co. | added 7/96; eliminated 1/99 | | NRHS |
| 6 | CTNX | General Electric Railcar Services Corp. | added 1/99; eliminated 1/2000 | | NRHS |
| 7 | CTNX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 8 | CTNX | CCC TRANSPORT [GE RAIL SERVICES CORP.; CONTINENTAL CARBON COMPANY] | | | PWRC |
| 9 | CTNX | Continental Carbon | | | RSRV |
| 10 | CTNX | CCC TRANSPORT COMPANY | | | SCAC4 |